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Thread: Mazzer Mini E doserless grind retention solutions

  1. #1
    Senior Member saoye's Avatar
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    Mazzer Mini E doserless grind retention solutions

    Gene Cafe Coffee Roaster $850 - Free Beans Free Freight
    Here's the problem, after every coffee I find the antistatic mesh at the chute to be completely full of old grind. I know many do not think it is a problem as disposing of the first 1 or 2g of coffee grounds is the accepted way of clearing old grind in the chute. I've watched this process with the top off and all I see is some of the old grind being pushed but the rest staying behind the antistatic mash. I hate that I can't get rid of this so I have since religiously been clearing this passage at every grind with a brush...but I still can't quite reach deep enough behind the mesh.
    I've researched and there hasn't really been any solution and I do not want to take off the mesh. Here's my solution and boy does it work well.

    Giottos GTCL2810 Q.Ball Angleable Air Blower Cleaning System

    The amount of air this hand pump generates is amazing. Just two pumps and it completely clears the chute. The angleable nozzle is perfect. I still do a quick brush of the mesh before hand and then give the chute two quick blasts with the Giottos Q ball and voila! All clear! I'm happy with my Q ball solution but perhaps you have a better way?

    IMGP1556_fhdr.jpgIMGP1559_fhdr.jpg

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    Senior Member BLrdFX's Avatar
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    Thanks for the thought! I have one or two of these laying about and never connected the dots; good idea!

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    Senior Member saoye's Avatar
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    Quote Originally Posted by BLrdFX View Post
    Thanks for the thought! I have one or two of these laying about and never connected the dots; good idea!
    Thanks. Let me know how you go. I got mine off the bay delivered for $15 from Ireland. It was the cheapest I could find. Used it again this morning and I'm still smiling.

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    Coffee Nut fg1972's Avatar
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    Looks like a good idea,
    Can you get it under the guard or have you removed the guard?

  5. #5
    Senior Member BLrdFX's Avatar
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    I removed the guard on mine and I use the bulb to blow from above with an abbreviated hopper and inside the discharge chute.

    IMG_0005.jpg
    IMG_0006.jpg

    I have a few short versions of this setup.

    Stephen
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  6. #6
    Senior Member saoye's Avatar
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    Quote Originally Posted by fg1972 View Post
    Looks like a good idea,
    Can you get it under the guard or have you removed the guard?
    I have removed the finger guard. I don't think you could do it without access to the mesh well not an accurate blast of air anyway. I suppose if you could somehow extend the Q ball's nozzle to get past the finger guard and at the entrance but then again if you have the finger guard on then you can't visually check if the chute is cleared all the way to the burr or not anyway.
    I'll give it a go tonight and report back with some pics.

  7. #7
    Senior Member saoye's Avatar
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    Quote Originally Posted by BLrdFX View Post
    I removed the guard on mine and I use the bulb to blow from above with an abbreviated hopper and inside the discharge chute.

    IMG_0005.jpg
    IMG_0006.jpg

    I have a few short versions of this setup.

    Stephen
    Hi Stephen. Interesting setup. I guess you're creating a kind of pneumatic piston from the hopper and blowing air out from the other end. How well does that clear the retained grind in the chute?

  8. #8
    Senior Member Yelta's Avatar
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    Quote Originally Posted by saoye View Post
    Hi Stephen. Interesting setup. I guess you're creating a kind of pneumatic piston from the hopper and blowing air out from the other end. How well does that clear the retained grind in the chute?
    Sounds similar to the click clack lid fix for the Rocky.

  9. #9
    Senior Member saoye's Avatar
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    I still like to weigh my dose and grind only the beans enough for my shot. I don't have a hopper on my grinder, I just use the useless single basket to cover the neck of the grinder to stop beans from jumping out when grinding.
    I allow the mazzer to grind until the sound quietens indicating no longer grinding beans, I then give the top of the burrs a quick brush while still grinding to get those shrapnels that missed getting ground up. Then I give the antistatic mesh a quick brush and finish with a couple of blasts with the Q ball.

  10. #10
    Senior Member saoye's Avatar
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    Ok, so here are some photos of the results using the Q ball.

    14g of indo beans.JPGchute after grinding.JPGquick brush.JPGafter quick brush.JPG

  11. #11
    Senior Member saoye's Avatar
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    Pictures continued (since it's a max 5 attachment limitation)

    Q ball at the ready.JPGafter Q ball.JPG14g of ground coffee exactly.JPG

    Success as far as I'm concerned!

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    Senior Member BLrdFX's Avatar
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    Saoye: I see you have removed a bit of the anti-static screen. I tried removing mine in small bits, at first, and then totally. It made cleaning much easier but the static level went up so much I put another on back in. I use a bamboo barbque skewer to get the grounds out of that chute, around the screen components, and then the bulb to blast out what remains.

    The second day I had my Mazzer (it's a Kony-E) I took the top off to clean out the burrs properly and see how much was retained in the grind chamber and the chute. I was pretty amazed, just cleaning the chute gets a small portion of the grinds, so now I just grind out about a double worth of grounds and toss them away since they are acting as a plug behind the screen. Air gets at the front of that plug pretty easily but I have noticed that after about a double or triple shot worth of grounds the stale reaction disappears in the mouth and shot blonding/gushing. The pneumatic piston (and it is darn close to air tight) works fairly well and because of its weight it provides a bit of false volume of beans. The electronic doser THINKS there is a larger volume of beans above the burrs.

    This is the grinder I use if grounds retention is bothering me.
    VersalabM3.jpg

    The lid on it is aluminum and has padding on the underside to stop all rattling; no undo noises here.



    Quote Originally Posted by saoye View Post
    Pictures continued (since it's a max 5 attachment limitation)

    Q ball at the ready.JPGafter Q ball.JPG14g of ground coffee exactly.JPG

    Success as far as I'm concerned!

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    Quote Originally Posted by BLrdFX View Post
    I see you have removed a bit of the anti-static screen.
    No he hasn't. That's what the original Mini E screen looks like. Mine is the same.

  14. #14
    Senior Member BLrdFX's Avatar
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    I'll be darned! Maybe I should try cutting out that pattern of the screen on mine to see how it works. The Knoy-E has the solid pattern with all those grid lines continuing across the chute opening. The fewer the grid lines the easier the cleaning

    Quote Originally Posted by Bill View Post
    No he hasn't. That's what the original Mini E screen looks like. Mine is the same.

  15. #15
    Senior Member saoye's Avatar
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    Quote Originally Posted by BLrdFX View Post
    The second day I had my Mazzer (it's a Kony-E) I took the top off to clean out the burrs properly and see how much was retained in the grind chamber and the chute. I was pretty amazed, just cleaning the chute gets a small portion of the grinds, so now I just grind out about a double worth of grounds and toss them away since they are acting as a plug behind the screen. Air gets at the front of that plug pretty easily but I have noticed that after about a double or triple shot worth of grounds the stale reaction disappears in the mouth and shot blonding/gushing.
    That's what I did previously as in grind out but as mentioned before you can see that a few g of beans attempt to clear the chute does not 100% push out stale ground from the chute. I eyeball approximately only 40% of the stale grind is cleared in this method. Incidentally using a nominal value of 4g per day (and it would be more) to grind out stale coffee over 365 days in a year is an additional 1.5kg of coffee I am essentially just grinding to throw in the bin a year. I'll put in the extra 15 seconds to brush out and to air out with the Q ball thank you very much. The Q ball pays for itself in less than 6 months in terms of value, saving me that 1.5kg of perfectly good coffee.
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  16. #16
    Senior Member saoye's Avatar
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    Just a video explanation of how I use to Q-ball to have zero grind retention in the Mazzer Mini E doserless grinder. Not for most I guess but if you're OCD like me on stale grind then might be something to consider if you have a doserless grinder.

    Grind retention Mazzer Mini E grinder Type A doserless solution - YouTube

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    Quote Originally Posted by saoye View Post
    Just a video explanation of how I use to Q-ball to have zero grind retention in the Mazzer Mini E doserless grinder. Not for most I guess but if you're OCD like me on stale grind then might be something to consider if you have a doserless grinder.

    Grind retention Mazzer Mini E grinder Type A doserless solution - YouTube
    Thanks for the video... very useful. I too have a Mini E Type A, am currently considering the HG One...

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    Well, I had the Mini-e apart yesterday to give it a good clean and it was chockers. That got me thinking you can never get every bit out, so personally I don't worry about it. I can't see a few grams of "stale" grind would make a difference in the taste. If you are using the grinder daily, how stale can it be? Maybe someone ought to do a taste test of coffees with and without bits of stale grind in it! Otherwise have a vacuum cleaner handy. :-)

  19. #19
    Senior Member Yelta's Avatar
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    Quote Originally Posted by franjae View Post
    Well, I had the Mini-e apart yesterday to give it a good clean and it was chockers. That got me thinking you can never get every bit out, so personally I don't worry about it. I can't see a few grams of "stale" grind would make a difference in the taste. If you are using the grinder daily, how stale can it be? Maybe someone ought to do a taste test of coffees with and without bits of stale grind in it! Otherwise have a vacuum cleaner handy. :-)
    Did it once, collected the sweepings for a few days then pulled a shot using my collection, what was it like? let's just say I won't be repeating the experiment any time soon.

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    Senior Member saoye's Avatar
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    Quote Originally Posted by Yelta View Post
    Did it once, collected the sweepings for a few days then pulled a shot using my collection, what was it like? let's just say I won't be repeating the experiment any time soon.
    That makes me dry-reach just thinking about it...yuck!!

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    hahaha, oh dear.......

    But that's 100% stale grinding ....... now go and pull a shot without cleaning out yesterday's grind out of the shute. You should be game to do this Yelta, this is mild compared to what you've done before!

  22. #22
    Senior Member saoye's Avatar
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    Quote Originally Posted by franjae View Post
    hahaha, oh dear.......

    But that's 100% stale grinding ....... now go and pull a shot without cleaning out yesterday's grind out of the shute. You should be game to do this Yelta, this is mild compared to what you've done before!
    Hi franjae, one day's stale grind is one thing, however if you never sweep the chute the edges will continue to stack with stale grind. There will always be very stale grind left on the corner edges for as long as you don't sweep it out with a brush etc so potentially years old stale grind. You will be drinking minute amounts of these, doubt you'd notice unless you have a very sensitive pallet. I doubt you can ever clean out 100% stale grind unless you clean the chute as well as the blades but that's probably not all that good for the grinder so I just clean what I can reach and that is the chute.

  23. #23
    Senior Member Yelta's Avatar
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    Quote Originally Posted by franjae View Post
    hahaha, oh dear.......

    But that's 100% stale grinding ....... now go and pull a shot without cleaning out yesterday's grind out of the shute. You should be game to do this Yelta, this is mild compared to what you've done before!
    The thing is I weigh each and every shot, into an empty hopper, grind, dose, then brush out the chute, run the grinder again briefly so that it spits out any loose grounds then brush out the dosing chamber.
    When I've finished there are virtually no visible stray grounds left.
    When I do give the Mazzer Mini a clean every 6 months or so I get approx 3 or 4 grams of caked on coffee out of the burr chamber (yep I've weighed that as well) as far as I'm concerned absolutely bugger all.

  24. #24
    Senior Member Yelta's Avatar
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    Quote Originally Posted by saoye View Post
    Ok, so here are some photos of the results using the Q ball.

    14g of indo beans.JPGchute after grinding.JPGquick brush.JPGafter quick brush.JPG
    Hmmm, Must say I don't like the look of the anti static mesh one bit, it's a real obstruction.
    Wonder why they use it on the E and not on the standard Mazzer Mini.
    I would certainly be looking at a way of eliminating it.

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    Quote Originally Posted by Yelta View Post
    Hmmm, Must say I don't like the look of the anti static mesh one bit, it's a real obstruction.
    Wonder why they use it on the E and not on the standard Mazzer Mini.
    I would certainly be looking at a way of eliminating it.
    Heaps to read about that all over the place, including the patent.

  26. #26
    Senior Member Yelta's Avatar
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    Quote Originally Posted by Pete39 View Post
    Heaps to read about that all over the place, including the patent.
    Crikey, that certainly adds a lot to the discussion.
    If there's "heaps to read" I've yet to trip over it.
    Perhaps a link or two, maybe even a clue.

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    Wega Mininova Classic Seeya_Latte's Avatar
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    Saoye - hats off to you, I'm somewhat less afflicted than you but if I find I haven't used the grinder more than a day, I use a simple skewer and poke around and it generally flicks out the stale fines. Then I'll run a bit through of the new beans, turf and then good to go

    I dont use the skewer between shots but I will purge just before a shot if we're talking hours apart

    Seeya

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    Quote Originally Posted by Yelta View Post
    Crikey, that certainly adds a lot to the discussion.
    If there's "heaps to read" I've yet to trip over it.
    Perhaps a link or two, maybe even a clue.

    Mazzer Mini E Modifications - Coffeetime Extra
    Mazzer Mini E grounds retention? - Grinders • Home-Barista.com
    CoffeeGeek - Espresso: Espresso Machines, Mazzer Mini E Owners *PLEASE READ*
    MICKV4 likes this.

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  30. #30
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    Finally found that patent I mentioned:

    Patent US6948668 - Coffee grinder-dispenser - Google Patents

    Links to lots of other patents held by Mazzer as well.

    Pete



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